1081749 has 8 divisors (see below), whose sum is σ = 1455552. Its totient is φ = 714560.

The previous prime is 1081741. The next prime is 1081757. The reversal of 1081749 is 9471801.

It is an interprime number because it is at equal distance from previous prime (1081741) and next prime (1081757).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1081749 - 2³ = 1081741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1257 + ... + 1934.

It is an arithmetic number, because the mean of its divisors is an integer number (181944).

2^1081749 is an apocalyptic number.

It is an amenable number.

1081749 is a deficient number, since it is larger than the sum of its proper divisors (373803).

1081749 is a wasteful number, since it uses less digits than its factorization.

1081749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3307.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 1081749 is about 1040.0716321485. The cubic root of 1081749 is about 102.6539111512.

It can be divided in two parts, 1081 and 749, that added together give a triangular number (1830 = T₆₀).

The spelling of 1081749 in words is "one million, eighty-one thousand, seven hundred forty-nine".